ECAN-240-FD (Modbus TCP to 2-port CAN FD Gateway) User Manual
Version 1.0.0
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55
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5.1.2.2 CAN Tx FIFO Address
The CAN1/2 port support CAN Tx FIFO. By using Modbus function code 0x10 write command to
write the protocol base address of “0” or “1024” and the data length in multiples of 36 words, user
can set maximum 5 CAN/CAN FD Messages to CAN1/2 Tx FIFO at one time.
CAN1 Tx FIFO Message #1 ~ #5
Protocol
Base Address
(0xxxx)
PLC
Base Address
(4xxxx)
Words
Description
00000 ~ 00179
40001 ~ 40180
36 * 5
CAN1 Tx FIFO Message #1 ~ #5 (N: 1~5)
Write “Protocol Base Address: 00000” and
“Word No: 36 * N”, you can set N CAN
messages to CAN1 Tx FIFO (N: maximum 5
messages).
CAN2 Tx FIFO Message #1 ~ #5
Protocol
Base Address
(0xxxx)
PLC
Base Address
(4xxxx)
Words
Description
01024 ~ 01203
41025 ~ 41204
36 * 5
CAN2 Tx FIFO Message #1~ #5 (N: 1~5)
Write “Protocol Base Address: 01024” and
“Word No: 36 * N”, you can set N CAN
messages to CAN2 Tx FIFO (N: maximum 5
messages).
